Will buying porn turn out to be bitcoin's killer app?

Porn.com has seen sales increase by nearly a quarter since it started accepting payments in bitcoin, leading the site to claim that porn could be the currency's "killer app". Now the site's owners are offering the domain for sale to anyone who will pay $50m in the digital currency. Porn.com started taking bitcoin for its premium services in December, and the currency rapidly came to account for 10% of its sales. But in early January, a post on Reddit's Bitcoin subforum took the news viral, and after a spike where the currency accounted for 50% of its sales, the bitcoin trade settled down at 25%. Some of the increase will be bitcoin fans rushing to support a site that takes their preferred form of payment, but David Kay, the marketing director at Porn.com's parent company Sagan Ltd, argues that there are other reasons as well: "Privacy and confidentiality are paramount when...